Replying to New to me brands

I was at tightboards and came across a couple of brands I am not familiar with, so I am curious if anyone knows anything about them: Artic Edge, Sierra and Teton.  I found a thread that mentioned Teton was a brand that is made for a specific shop, but it didn't say much else.  My first thought is that they are probably junk (especially for the price tightboards has them for) but then again I had never heard of 4frnt, Liberty or Moment at one point either, so...  If you know anything about them, about the quality or about a specific model, please share.
Thanks